BIF (Battery Interface) Controllers

Optional properties:
- qcom,known-device-addresses:  Specifies a list of integers which correspond to
                                the 8-bit BIF bus device addresses of BIF slaves
                                found on the target.

BIF Consumers

Optional properties:
- qcom,bif-ctrl:                phandle of parent BIF controller device node

Example:
	foo_ctrl: foo-controller {
		...
		qcom,known-device-addresses = <0x80, 0x81>;
	};

	bar-consumer {
		...
		qcom,bif-ctrl = <&foo_ctrl>;
	};
